By SINAN SALAHEDDIN
Associated Press

Assailants fired rockets and mortar rounds at a refugee camp for Iranian exiles outside Baghdad on Saturday, killing six people and wounding dozens, police and a camp spokesman said.

Nearly three dozen rockets and mortar shells struck the camp, home to some 3,100 people, before daybreak, said camp spokesman Shahriar Kia. He said more than 100 were wounded, several in serious condition. There was no immediate claim of responsibility.

It was the first reported deadly attack against the camp. The facility houses members of the Mujahedeen-e-Khalq or MEK, the militant wing of the Paris-based National Council of Resistance of Iran. Iraq's Shiite-led pro-Iranian government considers the MEK a terrorist group and is eager to have it out of the country.

The refugee camp is located in a former American military base known as Camp Liberty, adjacent to Baghdad's international airport. It is meant to be a temporary way station while the United Nations works to resettle the residents abroad. They are unlikely to return to Iran because of their opposition to the regime.

Two police officials confirmed that six people were killed in Saturday's attack and said more than 40 were hurt, including three Iraqi policemen. They spoke anonymously because they were not authorized to share information with the media.

The Iranian opposition group provided amateur video and photos it said showed the aftermath of the attack. One photo showed six bodies swaddled in blankets lying on the ground in a hallway. Amateur video showed wounded, some with blood-covered faces, being treated at a small clinic.

Kia, the camp spokesman, said Iraqi authorities refused to let the wounded be taken to area hospitals for treatment. Iraqi government officials were not immediately available for comment.

The U.N. envoy in Iraq, Martin Kobler, said he asked the Iraqi authorities to ensure medical care for the wounded. Kobler's office said in a statement that Iraqi officials assured him the wounded were hospitalized.

Kobler also called for a speedy investigation of the attack.

The camp was set up in 2012. Before being moved by the government to the Baghdad area, members of the MEK had lived in northeastern Iraq, near the Iranian border. Iraq's government says its members are living in Iraq illegally.

The group, which is also called the People's Mujahedeen of Iran, opposes Iran's clerical regime and has carried out assassinations and bombings in Iran. It fought in the 1980s alongside Saddam Hussein's forces in the Iran-Iraq war, and several thousand of its members were given sanctuary in Iraq by Saddam.

The group renounced violence in 2001 and the Obama administration took the MEK off the U.S. terrorism list in late September.